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5. Thermodynamics and thermochemistry — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
“The quantity of heat which must be supplied to decompose a compound into its element is equal to the heat evolved during the formation of that compound from the elements.” This statement is known as
  • A
    Hess's law
  • B
    Joule's law
  • C
    Le-chatelier's principle
  • ✓
    Lavoiser and Laplace law
✓

Answer

Correct option: D.
Lavoiser and Laplace law
(d)It is Lavoisier and Laplace law. This is another law of thermochemistry which was put forward before Hess's law.

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